Transmission-gearing.



Hens scnnnmnn, orzrmw YORK, n. Y.

TRANSMISSION-sanremo.

Specicaton of Letters Patent.

,rammed oet. 23,191?.

' Application filed February 16, 1917. Serial N o. 149,080.

To aZZ whom t may concern:

Be it knownV that I, HANS SCHNEIDER, a citizen of Switzerland, York, in the county of New York and State of N ew York, have invented new and useful improvements in Transmission'-Gearings, of

which the following is a specicatoir This invention vrelates yto transmissionv gearing, one of theinainobjeets in viewbeing to prevent the sudden' gripping or grabbing action between the clutch faces by' means of which theA motion of the driving shaft or clutch member-is imparted to the driven shaft or driven clutch member, the cooperating clutch faces on thedriving and driven shafts rotating constantly in the same direction as long as the driving shaft is rotating, the arrangement being further such that when one of the clutch members is allowed to slip in relation to the other clutch member, the driven shaft will operate at a different ratio of speedl from the Adriving sha ft. i

While the transmission gearing hereinafter described is particularly designed for use in connection with the driving mechanisin of niotor'vehicles, it will be apparent as the description proceeds that said transmission gearing is adapted for use iii other connections or wherever it is desired to vary the speed of a driving shaft and a driven.

shaft or discontinue or interrupt the operation of the drivenshaft. .i

Another object in view is tof so arrange the motion transmitting gears between the driving-and driven shafts that they remain constantly in mesh throughout their whole contacting area thus making it practically impossible to inutilate or strip the teeth of the gears, which sol frequently occurs in transmission gearing of the type in which thegears are slidable into and out of mesh.

. The construction also enables the gearing as a whole to be economically produced and maintained in working condition.

lVith the above and other v objects in view, the invention consists 1n the novel construction, combination and arrangement of parts,

herein described, illustrated and claimed. In vthe accompanyingdrawings* Figure l 1s a sectional -vieW of the trans- 'residing i at New mission gearing taken in line with the driving and driven shafts, the latter being shown in elevation. v

F ig. 2 is a diametrical section through the driven clutch member and the Asleeve to which it is feathered. i

I4`ig.r3 is a fragmentary plan yview ofthe driven shaft, the countershaft, andthe bearing for the latter. u

Referring to the drawings 1 designates a driving shaft, 2 a driven shaft, 3 a driving clutch member, 4 a driven clutch member and 5 a countershaft having fast thereon gears 6 and 7, the being driven by a gear 8 on the driving shaft 1,-and ythe gear 7 meshing with .and driving a gear 9loose on the driven shaft but rotating with the driven clutch mein ber 4.

The gear 8 may be fastened to the shaft by a pin or key 10 or any other suitable means and said gear 8 is shown as formed on theweb of a fly-wheel *11, this embodif ment of the invention adapts it especiallyV for use in connection with motor vehicles. The driving clutch member 3 is also shown as formed integrally with and having a fixed. relation to the fly-wheel v11 `and the gear 8. The use of the y-wheel 11 and the integral formation of the :gearS and the clutch member 8 are not however essential, the essential feature being that the gear 8 and the clutch member revolve as a unit and that both have a fixed relation to the driving shaft 1. v

The gear 9 is` provided with a hub or sleeve l2 feathered as indicated at 13 thus causing the gear 9 and the clutch member 4 to rotate as one but enabling the clutch member 4to have a limited sliding movement on the.' sleeve 12 and therefore relatively to the driven shaft 2.. VThe clutch member 3 is provided with a clutch-face 14 and the clutch member 4 is provided with aclutch'face l5 to coperate` with the clutchface 14.V A collar.16.or its equivalent .fast on the driven shaft 2 prevents longitudinal.shiftingmovement of the sleeve 12 so that the gears 6, 7, 8 and 9k are constantly maintained in mesh with each other. The clutch member ..4 has a hub 17 gear 6 meshing with and` upon which the clutch -member 4 is Y engagement which is formed with an annular groove 1S to receive a shifting fork whereby the clutch face 15 may b e moved away from the clutchl face ll.

The countershaft V is journaled to turn freely in a bearing 19, which is carried byv and bears 2. Said bearing is so formed as to givethe necessary slant or Obliquity to the countershaft A inv order that, the gears 6 and 8V may` constantly intermesh, Vandthe gears 7" and 9 also constantly intermesh. clutch member l is movable longitudinally of the driven Shaft 2 upon the sleeve 12, but the sleeve 12 carrying thegear 9 is; not shift-able in said direction. Under the present preferred embodimentfof the invention, the'gears 6, lV and 8 have an equal numf ber of teeth, but the gear 9 has either one tooth more or one tooth less than the other gears 6 'l and 8,.V rherefore when the, clutch face lb is Vallowed to slip in relation to the clutch face 14C, the gears 6, S and 9 operate to turn the sleeve 12 at a different ratio of speed from thedriving shaft 1. When, how;-V ev-er, the clutch face 15 isl moved into driving with the clutch face le, the gears 6 7, 8 and 9, iocledrand the sleeve 12 and the driven shaft '.2 are driven at the same Speed as the driving shaft` 1,. ,as long asv the diifngv shaft 1 is in operation, theV clutch member l is being driven in 'the same direction but the small dierence in the ratio of speel between the clutchmembers 3, and e prevents said clutch members from gripping or grabbing suddenly asin the case of; ordinary clutch mechanism now in use in,A which the clutch member carried by the iiy-wfheel and actuated directly by andY at theA same speed as the driving shaft, frequently revolves at a much greater speed than the shiftable clutch member, resulting in the disagreeable and injurious sudden grabbing action` when the clutch faces are brought into driving contact.

Nhile have described the clutch member t as being feathered tothe sleeve 12, it will of course be understood that the *clutch mem: ber t may be fitted upon the sleeve12, square in cross section or of any other irregular or non-circular shape in cross section, the es-w sential feature in this connection being that the clutch member elk should be moi nted to slide longitudinally of the sleeve 12 buty constantly rotate therewith, this in order that4 the gears (i, 7', 8 and 9 may remain conr stantly in mesh, while at the sametimeper-u mitting the necessary shiftingmovement 'of the clutch member e to. disengage the working faces of the clutch members or allow the necessary slippage between said clutch faces.

1. .in transmission gearing, the combina-` a fixed relation to the driven shaft f The Ashiftable j on the countershaftmeshing with said driven gear, all vofisiad gearsfbeing in cfmstant mesh, and means; permitting the. Sncf ond. clutch. member to be shiftedrelatively to the first named` clutch. member.

2, ln, transmissiongearing, the combina-i tion Otra, driving-shaft, a driven. Shaft, 'aY

clutch member actuatedby the drvingsbaft at the same speed as the latter, another,Y clutch member @.Qperatiag with the named clutch member and movable longif tndinallyl of the drivenshaf-t, aigear actua e lbyl the driving Shaft at the same speed as, the latter, a driven gear, having apositive driving Connection with the second @latch member, a counter-shaft journaledvn abear ing carried by said counter-shaft meshing withgtlie actuated by the driving shaft, anotherv on the countershaft,meshino'- .with driven gear, all of said gearsV eingin stant mesh, andmeansvpermitting the second clutch member to be shifted relatively to the first namedicluteh member, saidfsec'ond clutch member -beingslidably connected with said driven gear to Vallow for ay separation gaan between the working faces of said clutchf members.

3,. in transmission gearing,the eombinaf tion of a driving shaft, a. driven shaft, a clutch member actuated by thedrivingshaft at the. same` sneed as thelatter, a second. clutch member rotatablyfvmountedloose on thedriven shaft and movablelongitudinally of the latter into andvvout of engagementA with the iirst named clutch member, bevel gearingy interposed between Vthe driv-y ing shaft and thesecond clutchmember, said gearing includinga conntershaft carried by. the driven shaft,lsaid gearing-v and' clutelimembers being so designed that when the. clutch members are in working engagement, 'theyl both revolve at the same speed and when sa id clutch members are not-in engagement said clutch members revolve. at different speeds. l

1. 1n transmission gearing, the combination ol'l two main line shafts, a clutch.mem-V ber having a fixed relation to one of said shafts` a `second clutch memberY having a loose relation to the other shaft and movable fir-sti the driven shaft, a geary on geen said:

and

drivin gf;

longitudinally thereof into and out of en- Said clutch members revolve at lthe same gagement with the first named clutch memspeed, and when said lutch members are not ber, and bevel gearing interposed between in driving engagement, said lclutch members 10 said main line shafts and including a counrevolve at dierent speeds. n

5 tershaft carried by the driven shaft, said In testimony Whereofl afHx my signature.

gearing being so arranged that When the clutch members are in Workingengagement, HANS SCHNEIDER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. i 

